Skip to Main Content

At UM Health-West Gastroenterology, our team offers a wide range of services to diagnose, treat and prevent future digestive diseases. Our physicians use the latest endoscopic equipment to thoroughly assess a patient’s symptoms and prescribe an effective treatment. They visit patients in the hospital who may be experiencing digestive conditions and provide screening services on an outpatient basis.


  • Outpatient & Inpatient Consultations
  • Endoscopy
  • EGD
  • Colonoscopy
  • Flexible Sigmoidoscopy
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Small bowel Enteroscopy
  • Video Capsule Endoscopy
  • Bravo PH study
  • High Resolution Manometry and Impedance Study
  • Hemorrhoidal Infrared Coagulation
  • Liver Biopsy
  • Endoscopic Ultrasound (EUS)
  • Management of Large/Complex Polyps
  • Zenker’s Treatment
  • Bariatric Endoscopy
  • Interventional Endoscopy
  • POEM Evaluation
  • Management of Bowel Stricture
  • Enteral Stenting
  • 24 Hour Impedance Study
  • Surgical treatment of colon and rectal cancer 
  • Diverticulitis 
  • Crohn’s disease
  • Ulcerative colitis
  • Hemorrhoids 
  • Anal abscess & fistula 
  • Pilonidal disease 
  • Anal fissure 
  • Fecal incontinence 
  • Parastomal hernia 
  • Stomal prolapse 
  • Rectal prolapse 


Phone: 616.252.5775   
Fax: 616.252.5785


Luke DeRoo, DO
Armita Ghoddousi, DO
Ryan Hamby, DO

Colorectal Surgery

Antonia Henry, MD


Ammar Hassan, MD

Inflammatory Bowel Disease

Michelle Muza-Moons, MD

Interventional Endoscopy

Ryan Law, DO


2093 Health Drive SW, Suite 302
Wyoming, MI 49519

2093 Health Drive SW, Suite 100
Wyoming, MI 49519